Related Clues:

• Where to connect one end of a jumper cable
• True north spot
• Put to the proof
• See 1-Down
• It makes a bit of a stir
• Either end of a magnet
• Kind of phone
• Battery terminal
• Road ___
• Dip one's toe in, say
• Crammer's concern
• Checkup
• Rod
• Push to the limit
• Barbershop emblem